Abstract
The performed numerical simulation shows that the main parameter determining the performance of an optical amplifier/modulator is the stimulated-emission cross section (differential gain) in the active region. A cross section of ∼3×10-15 cm2, which is quite realistic for modern heterostructures with quantum-well active regions, may provide an amplifier/modulator performance sufficient for data transfer at a rate of ∼20 Gbit s-1.
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